#50 Caroline Wozniacki

AP

Tennis Player

Age: 21

In an era when women's tennis is defined by parity, Wozniacki passes for the sport's most consistent player.

She has come up short in majors so far. But at age 21 she's already spent 18 weeks ranked No. 1 in the world, won 18 singles titles, and displayed all the talent she needs to eventually become the undisputed star of her generation.

#46 Steve Nash

AP Images

Guard, Phoenix Suns

Age: 38

Nash is one of the oldest players in the NBA and is still leading the league this season in assists.

Six years after winning two straight NBA MVPs, he's still shooting the best he's ever shot in his career. Nash is the only recognizable star on the Suns' roster, and is basically the only reason Phoenix is winning games.

#10 Marta

She was the FIFA World Player of the Year five years in a row, has 80 goals in 72 international games, and she scored four goals and had two assists in the World Cup even though her team was knocked out in the quarterfinals.

#2 Novak Djokovic

Djokovic owns the tennis world right now. He has five Grand Slam titles, winning the last three slams he has played in.

Last year Djokovic had a ridiculous record of 70-6, won three grand slam titles, and 10 tournaments.

Most recently, he beat Rafael Nadal in the finals of the Australian Open in a five-hour long match.

#1 LeBron James

AP

Forward, Miami Heat

Age: 27

LeBron is the ultimate athlete.

He combines the passing ability of Magic Johnson, sheer strength and brute force of a Karl Malone or Dwight Howard, and Deion Sanders-like speed to dominate the NBA. His skills would easily translate to the NFL.

Oh and LeBron has also averaged no less than 26 points, five rebounds, and six assists per game for the last eight years.